Key result
Cryoballoon ablation successfully treated all 5 patients with focal atrial tachycardias originating from the pulmonary veins, with 0% clinical recurrences over a mean 10-month follow-up.
Why the study?
Does cryoballoon ablation successfully treat focal atrial tachycardias originating from the pulmonary veins in symptomatic patients?
Case Report (n=5)
Does cryoballoon ablation successfully treat focal atrial tachycardias originating from the pulmonary veins in symptomatic patients?
Cryoballoon ablation appears to be an effective and safe technique for treating focal atrial tachycardias originating from the pulmonary veins.
May support cryoballoon feasibility for rare pulmonary vein tachycardias; hypothesis-generating case series that leaves efficacy open pending larger studies.
AIMS: Cryothermic ablation using a cryoballoon is a novel technique which has been used to treat paroxysmal atrial fibrillation. In this study, we wanted to test this technique to treat focal atrial tachycardias (ATs) from the pulmonary veins (PV). METHODS AND RESULTS: Five patients (four women, one man, mean age 43 +/- 16 years) with severe symptoms due to focal AT originating from a PV were studied. A single transseptal puncture was done. After confirmation of the diagnosis by conventional mapping, a 23 or 28 mm cryoballoon catheter was positioned in the PV of interest. Freezing was done for 300 s and repeated at least once before attempts to induce arrhythmia. All patients were successfully treated. Total procedure and fluoroscopy time was 138 +/- 55 and 26 +/- 21 min, respectively. During a follow-up of 10 +/- 7 months no clinical recurrences occurred. CONCLUSION: Cryoablation using a cryoballoon might be an easy and safe tool to treat ATs originating from the PV with reasonable procedure time.
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Jensen‐Urstad et al. (2009) conducted a case report in focal atrial tachycardias from the pulmonary veins (n=5). Cryoballoon ablation was evaluated on successful treatment. Cryoballoon ablation successfully treated all 5 patients with focal atrial tachycardias originating from the pulmonary veins, with 0% clinical recurrences over a mean 10-month follow-up.
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